Machine for polishing knife-handles.



W. J; UARNEY.

momm r03 rousnme 1mm: HANDLES. APPLICATION FILED SEPT. 1, 1908.

909,544. Patented Jan. 12, 1909.

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' 314 w oz W. J. CARNEY.

KAUHINE FOR POLISHING KNIFE HANDLES. APPLICATION FILED 8EPT.1,1908.

909,544. Patented Jan. 12, 1909.

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framework, and 13 belt WILLIAM J. OARNEY, OF NORWICH, CONNECTICUT.

MACHINE FOR POLISHING KNIFE-HANDLES.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed September 1, 1908. Serial N 0. 451,195.

To all whom it may concern:

Be it known that I, \VILLIAM J. OARNEY, a citizen of the United States, residing at Norwich, county of New London, State of Connecticut, have invented a new and useful Machine for Polishing Knife-Handles, of which the following is a specification.

This invention has for its object to provide a simple and inexpensive machine for polishing the handles of knives and similar articles, for example, the metal handles of table knives, although it will of course be obvious that the invent-ion is not limited in its use to any special style of knives or similar articles.

\Vith this and other objects in view I have devised the simple and novel polishing machine, which' I will now describe, referring to the accompanying drawings forming a part of this specification, in which similar reference characters indicate the same parts in the several views.

Figure 1 is an elevation of my novel polishing machine complete; Fig. 2 a detail side elevation of the knife carrier and means for oscillating said carrier; Fig. 3 an end elevation of the knife carrier; Fig. 4 a side elevation of the machine complete as seen from the right in Fig. 1; Fig. 5 a detail sectional view on the line 55 in Fig. 4, looking in the direction of the arrows; Fig. 6 a detail elevation; and Fig. 7 is a perspective illustrating the clutch operating mechanism.

10 denotes the framework of the machine which may be of any ordinary or preferred construction.

11 and 12 denote shafts journaled in the pulleys carried by said shafts. Power is applied in any suitable manner to one of these shafts, in the present instance shaft 12, to drive the machine, shaft 11 being driven from shaft 12 by means of a belt (not shown) passing over belt pulleys 15, one only of which appears in full lines.

The polishing is effected by means of polishing belts 16 which pass over the pulleys 13 and over pulleys 17, 18 and 19 mounted on swinging arms 20 which are pivoted to the framework as at 21. Pulleys l8 and 19 are shown as journaled in yokes 22 extending from arms 20, and pulleys 17 are shown as journaled in yokes 23, carried by rods or bars 24 which slide in the upper ends of swinging arms 20 and are locked at any adjustment, in order to put any required process of being operated upon.

amount of tension upon the polishing belts, by means of set screws 25.

Each knife while being operated upon is held by an oscillatory carrier 26 which is socketed in a housing 27 secured of the framework. with a slot 28 which leaving the handle shown in Fig. 1 and lines in Fig. 2.

29 in Fig. 1 indicates the handle of aknife lying between the polishing belts in the The carrier 1s provided with a hub 30 which extends through the rear end of the housing and is provided with an arm 31.

32 denotes a shaft which is journaled in the framework and carries a pinion 33, an eccentric 34, a belt pulley 35 and a clutch 36. This shaft is driven by means of a belt 37, shown as crossed, which passes over belt pulley 35 and over a belt pulley 38 on shaft 12. Oscillatory motion is imparted to the carrier and to a knife handle that is being operated upon by means of an eccentric strap 39 on eccentric 34 from which a rod 40 extends and is connected to arm 31 by a slot and bolt connection as at 41 which enables the operator to vary the amount of os cillation of the carrier and knife handle that is being operated upon to suit the requirements of use.

42 denotes a gear wheel which is mounted on the framework as at 43 and is provided in its face with a cam slot 44 having a depression 60 in the horizontal plane. This cam slot is engaged by a pin 45 on a lever 46 which is pivoted to the framework as at 47. 48 denotes links pivoted to lever 46 on opposite sides of its pivotal point and con- The carrier is provided receives the knife blade projecting outward, as as indicated by dotted nected to swinging arms 20 respectively.

49 denotes an arm, one end of which is pivoted to lever 46, the other end being provided with a shoulder 50, and a reduced end 51 which normally lies in a slot 52 in one arm of a bell crank lever 53 which is pivoted to the framework.

54 denotes a link one end of which is pivoted to the other arm of bell crank lever 53, the other end of link 54 being pivoted to a clutch lever 55 which engages the sliding member of clutch 36. A spring 56 acts to normally hold the clutch members in the engaging position, whereby ospillatory movement is imparted to the carrier.

57 denotes a treadle and 58 a rod pivoted to the top to the treadle and extending upward through guides 59, the upper end of which engages arm 49 and raises said rod when the treadle is pressed down by the foot of the operator. When the treadle is pressed, down and arm 49 is raised, the shoulder 50 on said arm will be raised upward out of engagement with the bell crank lever so that said arm will be free to slide in slot 52 in the bell crank lever, which permits spring 56 to operate the clutch lever and throw the clutch members into engagement.

The'operation is as follows: Suppose the machine to be in use; the parts are in the position shown in the drawings. As soon as pin 45 extending from lever 46 enters depression 60 in slot 44, lever 46 will be oscilated from the position shown in Fig. 6, the upper arm 0 said lever moving toward the left and the lower arm toward the right, the effect of which is through links 48 to swing arms 20 outward away from each other and to move the polishing belts away from the knife handle that has been operated upon and also to move arm 49 longitudinally toward the right from the position shown in Fig. 7 Owing to the engagement of shoulder 50 on arm 49 with bell crank lever 53, said lever will be oscillated and link 54 will be moved longitudinally toward the right which will osclllate clutch lever 55 against the power of spring 56 and move the sliding clutch member out of the engagin position. This will stop the rotation of shaft 32, the eccentric and pinion and consequently of gear wheel 42, leaving arms '20 swung outward and the polishing belts swung away from the knife handle that has been operated upon. This knife is removed by the o, era tor from the oscillating carrier and anot er knife placed in position therein. The operator then places his foot upon the treadle, the effect of which is to raise rod 58 and swing arm 49 upward, placing shoulder 50 in alinement with slot 52 in the bell crank lever, arm 49 being now free to slide in the slot. As soon as arm 49 is raised so that the shouldered end thereof will pass into slot 52, clutch spring 56 will move the sliding clutch member into the engaging position so that belt 37 will communicate motion to belt pulle 35, shaft 32, the eccentric and the pinion w ich in turn will communicate .motion to gear wheel 42. As soon as the gear wheel commences to rotate, pin 45 on lever 46 will pass out from depression 60 in the cam groove, which will oscillate lever 46 and by means of links 48 will swing arms 20 and the polishing belts back to the,

operative position, as in Fig. 1, it being understood of course that the instant motion is communicated to shaft 32 the oscillation of the carrier commences, the effect of which is to Elms the ends as well as the sides of the ife handles in contact with the polishing belts so that the entire handles are polished. The return movement of lever 46 (just described) will of course move arm 49 from the position just described to the position shown in the drawings. As soon as shoulder 50 passes out from slot 52, arm 49 will drop downward by gravity and will again rest upon the upper end of treadle rod 58 leaving the shoulder in engagement with the bell crank lever, so that when pin 45 again passes into depression 60 in the cam slot, the engagement of the shoulder with the bell crank lever will again oscillate said lever and the clutch lever which will disconnect the clutch members and stop the rotation of shaft 32 and gear wheel 42 and the oscillation of the carrier, and links 48 will again swing arms 20 and the polishing belt outward away from each other, in which position they will remain until the o erator again places his foot upon the trea le.

Having thus described my invention I claim:

1. In a machine of the character described, the combination with an oscillating carrier for articles to be operated upon, of polishing belts adapted to operate on opposite sides of the article, arms carrying pulleys over which the polishing belts travel and means for swinging said arms outward away from each other carrying the polishing belts out of operative position.

2. In a machine of the character described, the combination with an oscillating carrier for articles to be operated upon, of polishin belts adapted to operate on o posite sides 0 the article, arms carrying pul eys over which the polishing belts travel, means for swinging said arms outward away from each other carrying the polishing belts out of operative position, and means for stopping the oscillation of the carrier.

8. In a machine of the character described, the combination with an oscillating carrier for articles to be operated upon, of polishing belts adapted to operate on opposite sides of the article, arms by which the polishing belts are carried, pulleys on said arms over which the belts travel, means for adjusting a pulley to regulate the tension of each belt and means for swinging said arms and the polishing belts into and out of operative position.

4. In a machine of the character described, the combination with a carrier for articles to be operated upon, polishing belts adapted to operate on opposite sides of the article, swinging arms by which said belts are carried and means for swinging the polishing belts into operative position and oscillating the carrier and for swinging thepolishing belts out of operative position and simultaneously stopping the operation of the carrier.

5. .In a machine of the character described,

ried, a wheel having a cam slot with a depression, a lever having a pin engaging the cam slot and links connecting said lever and the arms whereby the polishing belts are moved into and out of operative position.

6. In a machine of the character described,-

the combination with an oscillating carrier for articles and polishing belts, of arms by which the polishing belts are carried, a driven shaft, a clutch and pinion on said shaft, a gear wheel engaging the pinion and having a cam slot with a depression, a lever having a pin engaging the cam slot, links connecting said lever with the arms and connections intermediate said lever and the clutch for stopping and starting the shaft and gear wheel.

7. In a machine of the character described, the combination with an oscillating carrier for articles and polishing belts, of arms by which the polishing belts are carried, a driven shaft, a clutch, pinion and eccentric on said shaft, a gear wheel engaging the pinion and having a cam slot with a depression, a lever having a pin engaging the cam slot, connections between said lever and the arms and the clutch and connections between the eccentric and the carrier.

8. In a ma chine of the character described, the combination with an oscillating carrier for articles and polishing belts, of arms by which the polishing belts are carried, a driven shaft, a clutch on said shaft, operating connections between said shaft and the arms and the carrier, means for automatically disconnecting the clutch to stop the shaft and a treadle and connections for connecting the clutch.

9. In a machine of the character described, the combination with an oscillating carrier for articles and polishing belts, of arms by which the polishing belts are carried, a driven shaft, a clutch on said shaft, a wheel with a cam slot having a depression, a lever having a pin engaging the cam slot, links connecting said lever and the arms, an arm pivoted to said lever and having at its opposite end a shoulder, a bell crank lever having a slot through which said arm slides when the shoulder is raised, a link connecting the bell crank lever with the clutch, a spring acting to connect the clutch, a treadle and a rod connected to the treadle and acting to raise the shouldered arm, movement of said arm acting to oscillate the bell crank lever and disconnect the clutch and operation of the treadle acting to raise said arm, placing the shoulder in alinement with the slot and permitting the spring to connect the clutch, the arm sliding through the slot.

In testimony-whereof I afiix my in presence of two witnesses.

WILLIAM J. CARNEY. Witnesses:

A. M. Woosmn, S. W. ATHERTON.

signature, 

